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469755 (2005 QB21)
Classification: Main-belt Asteroid          SPK-ID: 2469755
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2186766365848651 7.935e-08  
a 2.388431544184671 1.6361e-08 au
q 1.866137367389172 1.9701e-07 au
i 2.712195523076844 6.5437e-06 deg
node 20.1051233909432 0.00012489 deg
peri 322.1271653274488 0.00012565 deg
M 357.4189733006386 1.4795e-05 deg
tp 2459010.166241041185
(2020-Jun-09.66624104)
5.547e-05 TDB
period 1348.241293159675
3.69
1.3853e-05
3.793e-08
d
yr
n .2670145187114992 2.7436e-09 deg/d
Q 2.910725720980171 1.9939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      149  
   data-arc span      5026 days (13.76 yr)  
   first obs. used      2005-08-26  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65097  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 13:59:27  

Additional Information
 Earth MOID = .859081 au 
 Jupiter MOID = 2.49536 au 
 T_jup = 3.499 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO477209  

469755 (2005 QB21)          Discovered 2005-Aug-26 by LONEOS at Anderson Mesa
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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